Download Twilight: Blue light filter for free
Download Twilight: Blue light filter for Android
Download Twilight: Blue light filter for Android Do you have trouble sleeping? Are your kids hyperactive when they play with the tablet before going to bed?
Are you using your smartphone or tablet in the late afternoon? Twilight may be a solution for you!
Recent research suggests that exposure to blue light before bed can disrupt your natural (circadian) rhythm and cause an inability to fall asleep.
The cause is the photoreceptors in the eye, which are called melanopsins. This receptor is sensitive to a narrow band of blue light in the 460 to 480 nanometer range that can suppress the production of melatonin, a hormone responsible for healthy sleep-wake cycles.
Experimental scientific studies have shown that the average person who reads on a tablet or smartphone for a few hours before bed may find their sleep is delayed by about an hour.
Twilight adapts your device's screen to the time of day. Filter the flux of blue light emitted by your phone or tablet after sunset and protect your eyes with a soft and pleasant red filter. The filter intensity smoothly adjusts to the solar cycle based on local sunset and sunrise times.
Get more Twilight
1) Reading in bed: Twilight is more pleasing to the eye for late-night reading. Especially since it is able to reduce the screen backlight much less than the screen backlight controls are capable of.
2) AMOLED screens: We've tested Twilight on an AMOLED screen for 2.5 years without any signs of fatigue or overheating. If configured correctly, Twilight produces less light (by enabling dimming) with a more even distribution of light (dark areas of the screen, such as the status bar, are colored). In fact, this can extend the life of the AMOLED screen.
